Caster.



C. P.-FEEBU S CH & J. 0. ROBERTS.

CASTER.

APPLICATION FILED MAY 29,1917.

Patented Jul 9, 1918.

INVENTOFIS Char/e6 P Feebusm du/d/s 0; fioberzi'i CHARLES IP. FEEBUSGH, OF KANSAS CITY, MISSOURI, AND JULIUS O. ROBERTS, F

' SALINA, KANSAS.

oas'rnn.

Specification of Letters Patent.

Application filed May 28, 1917. Serial No. 171,417.

- and useful Improvements in Casters; and

the art to 'leg We do declare the following to be a full,

and exact description of the invensuch, as will enable others skilled in which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

' Our invention relates to casters for tables, beds, chairs, etc., and has for its principal object to provide a device of this character that may be adjusted within its mounting to adapt the object to which it is applied to uneven floor surfaces or to compensate for any difference in length of the caster carrying parts, so as to provide a solid bearing clear, t1on,

for the supported object.

hing this object, we have.

Figure I is a side view of a caster con-.

structed according to the present invention.

Fig. II is a longitudinal section of the same. 1

Fig. III is a modified form of caster having a semi-spherical head instead of the usual roller. Referring more in 1 designates the leg or other supporting member of piece of furniture or t e like, to which the caster may be applied, and which is provided at its lower end with a bore 2 wherein an internally threaded receiving body sleeve 3 is located; the sleeve being of such diameter that it fits snugly within the bore and provided with longitudinally extending l'lbS 4 along its outer sides for preventmg the sleeve from turning .wi hin the mounting piece. At its lower end the sleeve has a peripheral base flange 5 for seating against the base of the to limit its inward movement and which is provided about its ed c with upwardly exten points 6 whic may be driven into the ase of the leg to anchor the sleeve firmly in the carrying member.

tact member, preferably detail to the drawings Threaded into the sleeve is a shank 9 which projects from the open end of the sleeve and at its lower end has an unthreaded head portion -10 that carries a floor concomprising a roller carrying yoke 11 that is pivotally mounted on said head and comprises a horizontal 'base 12 having downwardly extending spaced legs 13-43 at opposite sides between which a roller or wheel 14 is revolubly mounted on a transverse pin 15.

Fixed on the shank 9, preferably by a pin 16, is a nut 17 and seated against the under side of said nut is a plate 18 comprising an annular ball race 19 which retains antifriction balls 20 in contact with the yoke head'to permit free and easy pivoting of the roller yoke about its mountin The shank 9 may be adjusted ongitudi nally in the sleeve by turning the nut 17 and may be locked at an adjusted position by a lock nut 21 that is threaded onto the shank and adapted to bear against the sleeve head flange 5. v

In Fig. III we have shown a caster wherein the semispherical ball head 22 is fixed to the end of the shank 9; the head 22 being smooth so that it may slide over a floor surface without causing it to be marred or otherwise damaged.

In assembling the casters with the bodies upon which they are to be used, the sleeves 3 are first located 'in the bores 2 of the leg or other supporting parts of the object to which they are applied, and the shank .9, with the rollers and nuts 17 fixed thereon, are threaded within the sleeves by applying a wrench to the fixed nuts 17. The shanks are then looked in the adjusted positions by tightening the lock nuts 21 against the ends of the sleeves 5 to prevent the;1 shanks from beingdisplaced longitudina y.

It is apparent that by manipulation of thenuts 17 and 27 the casters may be adjusted to or from the mounting sleeves to provide a solid bearing for the supported object and may be adjusted to level the latter if it is placed on an uneven support or floor.

It is further apparent that the roller is it is apparent that there may be modificatiOns within the-scope of invention,

Having thus described our invention, what we claim as new therein, and desire to secure by Letters-Patent, is:

A caster comprising an internally threaded sleeve having ribs extending longitudinally along its outer surface and having an annular base flange provided with upwardly projecting points, a shank threaded onto said sleeve and extending from the lower end thereof, a yoke pivotally mounted on said shank, a roller mounted in' said yoke, a nut fixed on the shank adjacent the yoke, anti-friction members seated between the yoke and nut, and a lock nut threaded onto the shank adapted to engage the end of said sleeve for the purpose set forth.

In testimony whereof we aflix our signatures.

CHARLES P. FEEBUSCH. JULIUS O. ROBERTS. 

